CN1371452A - Closed motor-driven compressor - Google Patents

Closed motor-driven compressor Download PDF

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Publication number
CN1371452A
CN1371452A CN00812170A CN00812170A CN1371452A CN 1371452 A CN1371452 A CN 1371452A CN 00812170 A CN00812170 A CN 00812170A CN 00812170 A CN00812170 A CN 00812170A CN 1371452 A CN1371452 A CN 1371452A
Authority
CN
China
Prior art keywords
oil
compressor
refrigerant
aforementioned
sealed electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN00812170A
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Chinese (zh)
Inventor
江原俊行
只野昌也
山川贵志
小田淳志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN1371452A publication Critical patent/CN1371452A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34—Polyoxyalkylenes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0215—Lubrication characterised by the use of a special lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/09—Characteristics associated with water
    • C10N2020/097—Refrigerants
    • C10N2020/106—Containing Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)

Abstract

A closed motor-driven compressor (10) wherein a rotary compression element (18) using CO2 as a refrigerant and driven by a motor element (14) and a rotary shaft (16) connected to the motor element (14) is disposed in a closed vessel (12) storing lubricating oil in the bottom, the lubricating oil being fed to the slide portions in bearings, in upper and lower eccentric portions (38, 40) provided on the rotary shaft (16), and in upper and lower rollers (42, 44), via an oil hole (60) formed in the rotary shaft (16), oil supply holes (62, 64) and spiral oil grooves (66, 68), the lubricating oil being polyalkylene glycol type oil (PAG oil) (82) with low solubility in CO2 and high viscosity. PAG oil is low in solubility in CO2 and is capable of suppressing the decrease of efficiency due to the decrease of oil viscosity and also suppressing the outflow of oil into piping, and an increase in input is prevented from occurring.

Description

Sealed electrical compressor
Technical field
The present invention relates to sealed electrical compressor, particularly relate to for example with CO 2Use the sealed electrical compressor of best lubricant oil during as refrigerant.The present invention relates to the refrigerant recovering device, the refrigerant recovering method has the refrigerating plant of refrigerant recovering device, the reclaimer and the regeneration method of the controlling method of the refrigerant in the refrigerant loop or refrigerant recovering device.
Background technique
For example, specially permit the cylindric seal container that has oil conservator bottom disclosed rotary compressor is included in No. 2517346 communique " FO4B49/02 ", be contained in the electrical components in this seal container, be positioned at two rotation compression member by this electrical components driving of this electrical components below.Described rotation compression member is by cylinder, be connected the running shaft that drives with electrical components, by with the cylinder of the integrally formed eccentric part of this running shaft along the rotation of the inwall of cylinder, the blade that its front end contacts with cylinder, reciprocatingly slide in the groove in being located at cylinder, and the bearing components of the opening surface obturation of cylinder constituted, and then, will isolate mutually between each compression member with intermediate clapboard.Simultaneously, oily feed path (comprising hole and groove) is set on running shaft, is supplied to bearing portion and each slide part so that will be stored in the lubricant oil of seal container bottom.
But, considering that earth environment and combustibility or toxicity etc. adopt the carbon dioxide (CO as natural refrigerant 2) during as refrigerant, refrigerant pressure reaches about 100kg/cm in the high pressure side 2G then is approximately 30kg/cm in low voltage side 2G.
Therefore, in the ethers or ester class oil as lubricant oil use of the prior art, because to CO 2Solubility height, oil viscosity descend, and therefore, cause on high-tension side sealing variation, and this not only causes compression efficiency to reduce, and can cause because of oil and flow out to the problems such as input power rising that cause in the coolant piping.
Therefore, main purpose of the present invention provides and a kind ofly is suitable for most CO by using 2The lubricant oil of refrigerant is in the hope of improving the sealed electrical compressor of compression efficiency and performance thereof.
Disclosure of an invention
That is, in order to address the above problem, the present invention is a kind of sealed electrical compressor, with CO 2Configuration is contained in the sealed electrical compressor in the seal container of bottom storage lubricant oil as the motor compressor main body of refrigerant, it is characterized by, and uses polyethylene glycols oil as lubricant oil.
Owing to use full-bodied oil conduct and CO 2The lubricant oil of refrigerant combination, so, to CO 2Solubility low, sealing also can be guaranteed in the high pressure side, can prevent from the reduction of efficient and suppress oil to flow to pipe arrangement.
According to the present invention, using CO 2During refrigerant, also can provide compression efficiency high sealed electrical compressor.
To embodiment's detailed description, can further understand above-mentioned purpose of the present invention, feature and advantage by with reference to the accompanying drawings.
The simple declaration of accompanying drawing
Fig. 1 is the sectional arrangement drawing as the twin-tub type rotary compressor major component of one embodiment of the invention.
Fig. 2 is the diagram figure of the section of the rotation compression member major component among Fig. 1.
The optimised form that carries out an invention
Twin-tub type rotary compressor 10 as one embodiment of the invention shown in Figure 1 comprises: the cylindric seal container of being made by steel plate 12, be configured in the electrical components 14 in the upper space of this container 12, by the following side space that is positioned at this electrical components 14, be connected to the rotation compression member 18 that the running shaft 16 on the electrical components 14 drives.
Cylindric seal container 12 by with the bottom as oil conservator, hold electrical components 14 and the rotation compression member 18 container body 12A, and the lid 12B of the upper opening obturation of this container body 12A constituted, installation is used for external power supply is supplied to the tenminal block 20 (omission distribution) of electrical components 14 usefulness on this lid 12B.
Electrical components 14 is by the stator of installing in the form of a ring along the inner peripheral surface of the upper space of seal container 12 22, and the rotor 24 that is provided with the certain interval configuration in the inboard of this stator constitutes.On this rotor 24, be provided with the running shaft 16 that extends along vertical direction by its center.Stator 22 has the duplexer 26 that the silicon steel plate with ring-type is laminated, and is wound on a plurality of windings 28 on this duplexer 26.In addition, rotor 24 is the same with stator 22, is made of the duplexer 30 of silicon steel plate, and rotor and stator constitute alternating current motor.In addition, also can adopt the d.c. motor that is embedded with permanent magnet.
In addition, rotation compression member 18 is made of following each several part: intermediate clapboard 32; Be configured in the upper and lower air cylinders 34,36 of the upper and lower surface of this intermediate clapboard 32; Be connected to the up-down roller 42,44 that forms on the holistic eccentric part 38,40 up and down, in this upper and lower air cylinders 34,36, rotates with running shaft 16; With 42,44 contacts of described up-down roller, the inside of cylinder 34,36 is divided into low pressure chamber 34a respectively, 36a and hyperbaric chamber 34b, the blade up and down 46,48 of 36b; In the time of with the upper and lower opening obturation of upper and lower air cylinders 34,36, the upper support member 50 and the lower support member 52 of the bearing of double as running shaft 16.
And then, constitute the upper support member 50 of above-mentioned rotation compression member 18, upper cylinder 34, intermediate clapboard 32, lower cylinder 36 and lower support member 52 are reinstated a plurality of construction bolts 58 with upper plate 54 and lower plate 56 1 and are linked into an integrated entity by this arranged in order.
On running shaft 16, when oilhole that the fuel feeding used on each slide part that the lubricant oil of the bottom that will be stored in seal container 12 is fed to rotation compression member 18 uses 60 is set in the center of axle, on the outer circumferential face of running shaft 16, form via what be provided with halfway and give oilhole 62,64 be communicated with, oil is supplied to bearing portion and up-down roller 42 with oilhole 60, the helical of 44 inboard is given oil groove 66,68.And then, on the blade 46,48 spring 70,72 that all the time up-down roller 42,44 is loaded usefulness is being set up and down.
Here, in the high refrigerant of high-pressure, considering earth environment and use CO such as flammable and toxicity 2Under the situation of refrigerant, adopt CO as its lubricant oil 2The oil that solubility is low is the most suitable.That is,, be preferably polyglycols and derivative thereof as this oil.This oil is called PAG oil.This PAG oil viscosity is 100～200cSt, to CO 2The solubility of refrigerant is extremely low, the decline that can suppress to be accompanied by viscosity to the insufficient lubrication of each slide part and in pipe arrangement stream oil.
Numerical value when this viscosity is normal temperature (40 ℃) actually in the process of compressor operation, because the temperature rising can make viscosity descend, but locates to form oil film in bearing portion etc. in the present embodiment, can carry out lubricated fully.
Below the action summary in the present embodiment is described.
At first, when via tenminal block 20 and not shown distribution electrical components 14 being switched on, electrical components 14 starts, and is fixed on running shaft 16 rotations on the rotor 24.Simultaneously, be connected to running shaft 16 eccentric part up and down 38,40 in aggregates on up-down roller 42,44 rotation prejudicially in upper and lower air cylinders 34,36.Whereby, as shown in Figure 2, sucked cold media air in the low pressure chamber 34a of upper cylinders 34 action with upper blade 46 is compressed by last cylinder 42 by suction port 74, is sent to exhaust port 76 from the hyperbaric chamber 34b of upper cylinder 34.Simultaneously, in lower cylinder 36, carrying out same compression with the phase difference of 180 degree.Promptly, in this case, the cold media air that is carried out the intermediate pressure of one-level compression in upper cylinder 34 is inhaled into the low pressure chamber 36a from the suction port 78 of lower cylinder 36, carries out the secondary compression by the action of bottom roll 44 and lower blade 48 in the 36b of the hyperbaric chamber of lower cylinder 36.Then, the cold media air of High Temperature High Pressure is sent to the external refrigerant circuit (not shown) that constitutes the freeze cycle (not shown) via exhaust port 80 from hyperbaric chamber 36b.Then, by repeating this action, carry out freeze cycle constantly.
Rotation along with running shaft 16, the PAG oil 82 that is stored in the bottom of seal container 12 rises in the oilhole 60 of the vertical direction of the axle center of being located at running shaft 16, on the way from giving oilhole 62,64 flow out to helical gives oil groove 66, in 68, bearing to running shaft 16 reaches each slide part oil supply of eccentric part 38,40 up and down.Consequently, eccentric part 38,40 can wear and tear less and suitable sliding rotation about this running shaft 16 reached.
The possibility of industrial application
According to the present invention, because conduct and CO2The lubricating oil of refrigerant combination uses full-bodied oil, to CO2Solubility low, can guarantee on high-tension side sealing, can prevent Efficiency Decreasing And inhibition oil flows to pipe arrangement.
In addition, even using CO2During refrigerant, also can provide compression efficiency high hermetic type electricity Moving compressor.

Claims (4)

1, a kind of sealed electrical compressor is that the interior configuration of seal container that is bottom storage lubricant oil is held with CO 2Sealed electrical compressor as the motor compressor main body of refrigerant is characterized by, and uses polyethylene glycols oil as aforementioned lubricant oil.
2, sealed electrical compressor as claimed in claim 1 is characterized by, and aforementioned oil viscosity is in the scope of 100～200cSt at normal temperatures.
3, sealed electrical compressor as claimed in claim 1 or 2, aforementioned motor compressor main body comprise electrical components and by the shaft-driven rotation compression member of the rotation that is connected with the aforementioned electric dynamic component.
4, sealed electrical compressor as claimed in claim 3, aforementioned rotation compression member includes two cylinders.
CN00812170A 1999-08-31 2000-08-30 Closed motor-driven compressor Pending CN1371452A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24500399A JP2001073945A (en) 1999-08-31 1999-08-31 Hermetic electric compressor
JP245003/99 1999-08-31

Publications (1)

Publication Number Publication Date
CN1371452A true CN1371452A (en) 2002-09-25

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Application Number Title Priority Date Filing Date
CN00812170A Pending CN1371452A (en) 1999-08-31 2000-08-30 Closed motor-driven compressor

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CN100347451C (en) * 2003-08-14 2007-11-07 三星电子株式会社 Volume-variable rotary compressor
CN101042238B (en) * 2007-02-12 2010-12-08 深圳京基环保设备有限公司 Support device of fire grate series

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WO2001016485A1 (en) 2001-03-08
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JP2001073945A (en) 2001-03-21

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